The Coquille Tribe has opposed the measures from the start because they want to keep gaming in the hands of the state and the tribes.
Ray Doering, the tribe spokesman, says this announcement is encouraging because it shows that people like the way gaming is handled now.
"The Coquille tribe is pleased to see that Oregon's tribes have earned the trust of the voters in regard to how the tribes have conducted gaming in the state of Oregon," Doering said.
The announcement to drop the campaign comes after a survey determined the majority would vote against the measures.
Doering says just because a group of investors decides to stop spending money on advertisement, it doesn't mean 82 and 83 won't be passed.
"This policy question is not going to be decided by a survey of likely voters, the policy question is going to be decided by actual voters who mark their ballots and send them in and have them counted," he said.
He encourages the public to continue to go out and vote.
The tribe wants to make it clear that this announcement has nothing to do with and will not affect the Coquille tribe's plans to build a second casino in Medford.